›› 2014, Vol. 23 ›› Issue (9): 94212-094212.doi: 10.1088/1674-1056/23/9/094212
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
范振凯, 李曙光, 范玉秋, 张婉, 安国文, 鲍亚杰
Fan Zhen-Kai (范振凯), Li Shu-Guang (李曙光), Fan Yu-Qiu (范玉秋), Zhang Wan (张婉), An Guo-Wen (安国文), Bao Ya-Jie (鲍亚杰)
摘要: We design a novel kind of polarization beam splitter based on a gold-filled dual-core photonic crystal fiber (DC-PCF). Owing to filling with two gold wires in this DC-PCF, its coupling characteristics can be changed greatly by the second-order surface plasmon polariton (SPP) and the resonant coupling between the surface plasmon modes and the fiber-core guided modes can enhance the directional power transfer in the two fiber-cores. Numerical results by using the finite element method show the extinction ratio at the wavethlengths of 1.327 μm and 1.55 μm can reach-58 dB and-60 dB and the bandwidths as the extinction ratio better than-12 dB are about 54 nm and 47 nm, respectively. Compared with the gold-unfilled DC-PCF, a 1.746-mm-long gold-filled DC-PCF is better applied to the polarization beam splitter in the two communication bands of λ=1.327 μm and 1.55 μm.
中图分类号: (Fiber optics)